Patents by Inventor Lichang Zeng

Lichang Zeng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11342515
    Abstract: Ligands with fused spirocyclic substitutions and metal complexes formed with such ligands and having improved performance in OLED applications are disclosed.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: May 24, 2022
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Suman Layek, Chuanjun Xia, Zhiqiang Ji, Edward Barron
  • Patent number: 11342510
    Abstract: A premixed co-evaporation source that is a mixture of a first compound and a second compound is disclosed. The co-evaporation source is for vacuum deposition process. The first compound has a different chemical structure than the second compound. The first compound and the second compound are both organic compounds. At least one of the first compound and the second compound contains at least one less abundant stable isotope atom. At least one of the first compound and the second compound is a fluorescent or delayed fluorescent emitter. The first compound has an evaporation temperature T1 of 100 to 400° C.; the second compound has an evaporation temperature T2 of 100 to 400° C.; the absolute value of T1?T2 is less than 20° C.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: May 24, 2022
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Chuanjun Xia, Scott Joseph, Walter Yeager, Mingjuan Su, Ting-Chih Wang
  • Publication number: 20220158095
    Abstract: A compound, an organic electroluminescent device containing the compound, and an application thereof. The compound has a structure shown in (I).
    Type: Application
    Filed: April 7, 2020
    Publication date: May 19, 2022
    Inventors: Jinhua HUANG, Lichang ZENG, Weihong ZHANG
  • Publication number: 20220115601
    Abstract: Organic materials containing dibenzofuran or aza-dibenzofuran moiety are disclosed in this application. These materials are expected to improve OLED device performance.
    Type: Application
    Filed: December 22, 2021
    Publication date: April 14, 2022
    Inventors: Lichang Zeng, Zeinab Elshenawy, Walter Yeager, Alexey Borisovich Dyatkin, Chuanjun Xia
  • Patent number: 11302872
    Abstract: A composition of matter that includes a novel combination of host compounds containing indol-fused hosts and emissive dopants containing benzofuran or azabenzofuran ligand is disclosed,
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: April 12, 2022
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Vadim Adamovich, Alexey Borisovich Dyatkin, Walter Yeager, Chuanjun Xia, Zhiqiang Ji, Michael S. Weaver
  • Publication number: 20220081459
    Abstract: The present invention discloses novel Pt(IV) compounds useful for enhancing the performance of organic electroluminescent devices.
    Type: Application
    Filed: July 22, 2021
    Publication date: March 17, 2022
    Inventors: Zhiqiang Ji, Lichang Zeng, Chun Lin
  • Patent number: 11254697
    Abstract: A compound including a first ligand LA having the structure of Formula I, is disclosed. In Formula I, rings A and B are each a 6-membered rings; Z1 and Z2 are each carbon or nitrogen; each RA and RB is independently hydrogen or a variety of substituents; any two substituents are optionally joined or fused into a ring; at least one RA or RB comprises an aromatic group substituted by a bridge structure, and this RA or RB joins with an adjacent substituent and fuses to ring A or B; the bridge structure comprises a backbone structure that forms a fused first ring; the backbone structure is saturated, comprises at least one heteroatom, and is optionally further substituted; and the ligand LA is coordinated to a metal M that can be coordinated to other ligands.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: February 22, 2022
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang Ji, Lichang Zeng
  • Patent number: 11245081
    Abstract: This invention discloses novel compounds containing carbazole and (or) DBX units, separated with polyaromatic spacers. These compounds can be used as hosts for PHOLEDs.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: February 8, 2022
    Assignee: Universal Display Corporation
    Inventors: Alexey Borisovich Dyatkin, Lichang Zeng
  • Patent number: 11245080
    Abstract: Organic materials containing dibenzofuran or aza-dibenzofuran moiety are disclosed in this application. These materials are expected to improve OLED device performance.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: February 8, 2022
    Assignee: Universal Display Corporation
    Inventors: Lichang Zeng, Zeinab Elshenawy, Walter Yeager, Alexey Borisovich Dyatkin, Chuanjun Xia
  • Patent number: 11239432
    Abstract: A new series of iptycene derivatives as ligands for metal complexes that are useful as phosphorescent emitters for incorporation into OLEDs are disclosed. Provided are compositions that include a compound including a chemical group of Formula I wherein (1) the chemical group of Formula I is included as at least one of the substituents in a bidentate ligand forming the metal complex, or (2) when the substituents in a bidentate ligand forming the metal complex are attached to a six-membered ring, at least one of the such substituents join adjacent substituents and fuse into the six-membered ring attached thereto to form a chemical group having Formula I.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: February 1, 2022
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Mingjuan Su, Lichang Zeng, Chuanjun Xia
  • Publication number: 20220009954
    Abstract: An OLED including an anode, a cathode, and an organic layer between the anode and the cathode, where the organic layer includes a compound having the formula [LA]3-nIr[LB]n is disclosed.
    Type: Application
    Filed: September 14, 2021
    Publication date: January 13, 2022
    Applicant: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang JI, Jui-Yi TSAI, Lichang ZENG, Alexey Borisovich DYATKIN, Walter YEAGER, Eric MARGULIES, Pierre-Luc T. BOUDREAULT
  • Patent number: 11192910
    Abstract: A compound having the formula [LA]3-nIr[LB]n is disclosed.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: December 7, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang Ji, Jui-Yi Tsai, Lichang Zeng, Alexey Borisovich Dyatkin, Walter Yeager, Eric Margulies, Pierre-Luc T. Boudreault
  • Publication number: 20210376256
    Abstract: Novel compounds that contain azadibenzofuran, azadibenzothiophene, and azadibenzoselenophene with fused rings that can be used as a host material in phosphorescent OLEDs is disclosed.
    Type: Application
    Filed: August 9, 2021
    Publication date: December 2, 2021
    Applicant: Universal Display Corporation
    Inventors: Chuanjun XIA, Lichang ZENG, Walter YEAGER, Zhiqiang JI
  • Publication number: 20210351362
    Abstract: A dual host system for OLEDs that contains hole-transporting indolocarbazole and electron-transporting indolocarbazole exhibiting superior performance in the OLEDs is disclosed.
    Type: Application
    Filed: July 2, 2021
    Publication date: November 11, 2021
    Applicant: Universal Display Corporation
    Inventors: Lichang ZENG, Vadim ADAMOVICH, Chuanjun XIA, Michael WEAVER
  • Publication number: 20210343950
    Abstract: The present invention includes novel six member aromatic or heteroaromatic rings fused to aza-DBX as ligands for making dopants for OLED applications.
    Type: Application
    Filed: June 4, 2021
    Publication date: November 4, 2021
    Inventors: Zhiqiang Ji, Lichang Zeng
  • Patent number: 11127905
    Abstract: Novel compounds that contain azadibenzofuran, azadibenzothiophene, and azadibenzoselenophene with fused rings that can be used as a host material in phosphorescent OLEDs is disclosed.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: September 21, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chuanjun Xia, Lichang Zeng, Walter Yeager, Zhiqiang Ji
  • Patent number: 11114624
    Abstract: The present invention includes a new series of benzofused heterocyclic ligands for metal complexes. These complexes show promising photophysical performance when incorporated into OLEDs.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: September 7, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Mingjuan Su, Walter Yeager, Alan Deangelis, Bin Ma, Jui-Yi Tsai, Lichang Zeng, Chuanjun Xia
  • Publication number: 20210257554
    Abstract: A composition of materials including a first compound having a structure according to Formula I
    Type: Application
    Filed: January 19, 2021
    Publication date: August 19, 2021
    Applicant: Universal Display Corporation
    Inventors: Lichang ZENG, Suman LAYEK, Pierre-Luc T. BOUDREAULT, Zeinab ELSHENAWY, Gregg KOTTAS, Alexey Borisovich DYATKIN, Scott JOSEPH, Vadim ADAMOVICH, Chuanjun XIA, Ting-Chih WANG, Walter YEAGER
  • Patent number: 11094891
    Abstract: A dual host system for OLEDs that contains hole-transporting indolocarbazole and electron-transporting indolocarbazole exhibiting superior performance in the OLEDs is disclosed.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 17, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Vadim Adamovich, Chuanjun Xia, Michael S. Weaver
  • Patent number: 11081647
    Abstract: The present invention relates to novel light-emitting materials. These materials comprise a non-aromatic spiro polycyclic group. This new side chain could reduce the stacking of the light-emitting materials and result in high PLQY.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: August 3, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Lichang Zeng, Chuanjun Xia